Valve for gas-engines.



P. G. HOBART.

VALVE FOB. GAS ENGINES.

APPLICATION FILED MAYS, 190e,

Patented June 1, 1909.

Witnesses m ED'sTATEs.PATENT OFFICE.

FRANKLING. HOBART, or BELOIT, wrs

PANY, or on oAeo, ILLINOIS;

To all who Be itkn a citizen of the United States of America, siding at Beloit, in the county of Rock and State of IVisconsin,

QONSIN, ASSIGNOR TO FAIRBANKS, MORSE dz COM- A CORPORATION OF ILLINOIS.

VALVE FOR eas- 'nzvemns.

Specification of Letters Patent.

Patented Junel, 1909.

m it may concern: own that I, FRANKLIN G. HOBART,

have invented certain new and useful Improvements in Valves for Gas-Engines, of which the following is a specification, reference being had therein to the accompanying drawings.

mvention relates check and and consists in a new and to combination test valves for explosion engines useful construc-' tion and combination of parts, as .Will be more particularly hereinafter described and pointed out in the claims.

Figure 1 is a longitudinal central section through my improved valve showing the application of the device to a cylinder; Fig. 2 is a fragmentary form.

A is a tubular body section showing a modified member having a bore or hole of different diameters to form the shoulder a therebetween.

tion A of The central porthe body is preferably hexagonal in cross section to permit the application of a Wrench. One end lindrical projection B end and the portion A of the body forms a cyand intermediate this the body is exteriorly threaded at B for attachment to the cylinder wall C This cylindrical end of the body member can thus be inserted well through the cylinder wall while only the outer end of the aperture therein need bethreaded. In

one side of the body is a lateral aperture D, tapped for the insertion of a suitpreferably able pipe with the a ply as. desired. 7 1S exteriorly threaded for engagement with a to which is secured a hollow cap F by means G is a valve seating ol' the body member. valve passes through the hollow body and is threaded at its end ment with the collar H and the whereby t stem.

H I asses pre erable bushing E The collar H is with a flange h for engagement with a ring or collar I through which the body of the collar D for connecting the hollow core t-mosphere or ith gas and air sup- The outer-end E of the body of screws F.

on the cylindrical end The stem G of the core of the for engagejam nut H he collar may be adjusted on the preferably provided with sliding engagement. The construction of the collar I consists in forming it of a series of sheet metal Washers. able elasti This construction gives a desircity to the collar. The rim of the collar I fits a recess in the inner face of the cap F and the collar the outer face of the bushing E. The flange it being beyond. the collar I, said collar forms a stop for limiting the opening movement of the valve G. When used as a check valve, the valve is yieldingly held to its seat by a spiral spring J, having its inner-end bearing against the shoulder a and its outer end against the. collar H.

From the above description, it is obvious that by rotating the cap and bushing, the collar I will be adjusted to vary the limit of the opening of valve G or to close the valve positively.

When it is desired to use the device as a test valve or petcock, the s ring may be dispensed with, as desired. he bushing E is screwed down on the member E until the upper end of the stem G abuts against the inside of the cap F,and the collar H is then adjusted until the flange it engages the ring or collar I. It is obvious that with the parts in this position they are locked against relative vertical movement and any adjustment of the cap F will positively open or close. the valve G. If desired a filler block, such as'K, may be interposed between the end of the stem and the cap, as shown in Fig. 2.

What I claim as my invention is:

1, In a valve for ex losive engines, the combination with a body member having a longitudinal hollow core ters, forming a shoulder therein and having an aperture connected with said hollow core, said body member carrying means intermediate its ends for attachment to the engine, of a valve seated adapted to be automatically opened and closed, a valve stem passing through said hollow core, an adjustable collar on said stem, a yielding member sleeved on said stem and bearing against said collar and said shoulder, and tending'to hold said valve to its seat, an adjustable cap inclosing one end of said body member for adjusting the opening and closing movement of said valve, and means for locking said stem and cap against relative vertical movement whereby the adjustment of said cap positively opens or closes said valve.

2. In a valve for explosion engines, the combination with a body member havin a hollow core andhaving a threaded portlon 1 intermediate its ends for attachment to the is retained therein by of different diame at one end of said body I passing through said hollow core, an adjustable collar on said stem, a yielding member valve seating in said en ine, one end of said body member being cy 'ndrical for insertion in the engine, of a cylindrical end,.a stem for said valvepassin through said hollow core and entirely inclose within the valve casing,

a yielding member tending to hold said valve to its, seat, an adjustable cap inclosing the outer end of said valve, the adjustment of said cap being adapted to vary the opening and clos ng movement of said valve, an means for locking said cap and stem against relative vertical movement, whereby the ad just-ment of said cap positively opens or closes said valve, for the purpose described.

In a valve for explosive engines, the combination with a bory member having a longitudinal hollow core of different diameters, forming a shoulder therein, said body member carrying means intermediate its ends for attachment to the engine, of'a. valve seated at one end of said body, a valve stem combination with a body member having a longitudinal hollow core of diiierent diameters'forming a shoulder therein, the central )ortion of said body member being polygonal in cross section to form a wrench hold, and

means intermediate the ends for attachment to the en ine, of a valve seated at one end of said bo y adapted to be automatically 0 ened and closed, a valve stem passing t rough said hollow core, a yielding member tending to hold said valve to its seat bearing upon'said shoulder, a bushin adjustably secured to the outer end of sai body member, a hollow cap removably secured to said bush ing, and means on said cap and valve stem whereby the adjustment of said ca will vary the limit of the opening or closing movement of said-valve, for the purpose described.

5. In a valve for ex losive engines, the combination with a be y member having a longitudinal hollow core of different diameters forming a shoulder therein and having an aperture connected with said hollow core, said body member carrying means intermediate its ends for attachment to the engine,

of a valve seated at one end of said body adapted to be automatically opened and closed, a valve stem passing through said hollow core, an adjustable collar on said stem, a yielding member sleeved on said stem and bearing against said collar and said shoulder and tending to hold said valve to its seat, and an adjustable cap for said body member with which said collar has a sliding engagement adapted to vary the opening and closing movement of said valve.

In testlmony whereof I aflix my signature in presence of two witnesses.

FRANKLIN G. HOBART.

\Vitnesses: I

E. O. Pownns, A. B. GARDNER. 

